Automobile.



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PATENTED APR. 7, 1908. A. B. SHULTZ. AUTOMBILE. APPLIoATloN FILED188.18.12. 180e.

2 SHEETS-SHEET 2.

, "UNTED STA'QMFEN T OFFICE.

ALBERT B. SHULTZ, OF BUIIFALO,` NEW YORK, ASSIGNOR OF `ONE-HALF TOHERBERT H..

" HEWITT, OF BUFFALO, lNEW YORK.

AUTOMOBILE.

No. ssaeea Specication of'iLetters Patent.

Patented April 7. 190s. l

Application med umn 12.1906. A serial No. 305,434.

Toall whom it 'muy concern:

Beit known that I", ALBERT B. SHULTZ, a

citizen of the United States, and residentv of Bufalo,I in the county ofErie, and' in the State of New York, have invented new and 'useful Imrovements :in Automobiles, of

` which the ollowing is a specification.

This invention relates to an improvement inthe arrangement andconstruction of the brake mechanism, the means for preventing backing-up'and the means for staying or holding the driving axle of anautomobilein position.

In the of two sheetsz-Figurel is a sectional side ,elevation of the rearart of an automobile in line 1-1, Fig. 2. 1g. 2 is a horizontal sec- Vtion thereof taken 'substantially in line 2-2, Fig. 1. Fi 3 is avertical section taken in line 3-3, 2 and looking in the directionopposite to-t at, of Fig. 1. Fig. 4 is a fragmentary vertical section inline 474, Fig. 1.

Similar'letters of reference indicate correl spending parts throughoutthe several views.

A represents the main frame of the automobile` which may be of anysuitable construction, B the driving axle arranged transversely belowthe frame, C one of the semielli tical main springs connected at oposite en s with the frame and at its centra part with the axle and D oneof the rear traction wheels journaled on one end of the `axle outsideofthe elliptical spring. E represents the drivin shaft which 1sjournaled 1n a bearing forme on ahanger or bracket Fwhich is secured.tothe main frame infront' of the drivin axle. Motion is transmitted fromthe driving shaft to the traction wheel by means -which. comprise achain beltG passing around a sprocket pinion e on the drivmg shaft and asprocketrimfh arranged concentrically with l V e traction wheel on theinner side thereof and operativel connected therewith..

The meanss own in the drawings for cons '.necting the sprocket rim ywiththe traction wheel vconsists of a cylindrical drum I arrangedconcentrically relativel'jT tothe driv.y ing axlefand traction wheel onthe inner sideof: the latter and provided on the central part of itsAperipher with an external annular flange 't to whc the sprocket ri'm isdetach. 'ably secured by bolts. i and alchannel shaped coupling rinsecured with its raisedcentral pant Jby bo tsj to lanintern'al flange kat the outer; end ofthe drum and provided .with in-4 accompanyingdrawings consistingv rstrains to which the same is subjected but ternaland external annular flangesy Z, Z5'A which are respectively securedtothe inner side of the spokes of the traction Wheel and.

the Hanges m on the hub M thereof by bolts n, n as shown in Fig. 2.

` In order to prevent the distance between the driving shaft and thedriving axlefrom 'being materially altered as the body de presses themain spring more or less the axle 1s connected with the main frame by astayin device which is preferably constructed as fo ows:-o, o re resentthe upper and lower parts of a divide cylindrical coupling sleeve or boxwhich are applied tothe up ervand lower sides of a cyllndrical part of te' drivin'g axle so asto be free to turn thereon. and. which areconnected with each other by bolts lor screws o2 on opposite sides of'the axle soas to conline the sections of the sleeve on the axle. Prepresents an arm pro'ecting forwardly from the -u l.per sectiono44 thecoupling sleeve, p a rear a justing rod section projecting forwardlyfrom sald arm and havmg an external screw thread, p a front adjusting,rod section arranged in line withv the r'ear section and having its rearend provided with an external screw thread and pivotally which issufficientlyexible or movableto permit the body to rise and fallrelatively to ythe axle Without producing an appreciable shortening orlen thening of t e c belt thereby causing t e' latter to run evenly andwithout whipping. The parts which have heretofore been employed forretaining the driving axle inposition relatively. to. the frame anddriving mechanism. are. comimonly `referred to collectively as a "radiusMeans are provided for preventing backward movement of the automobile inoing up or grade and it is desired to hol the i.' same against backingup without using the 1104 mounting this detent pawl on the stay a verybrakes either when the power Oives out or is thrown off deliberately'.The preferred means for this purpose shown in the drawings consists of aback-up or detent pawl or dog S pivoted by a transverse pin s on the armP of the upper coupling sleeve section and enraging with an annular rowof ratchet teeth t.

formed on the periphery of the drum at the inner end thereof, eachtoothhaving an inclined front side and an abrupt rear side, 'as showninFig. 3. When traveling on a level road this pawl may be lifted out ofengagement from the ratchet teeth but when moving up a hill the pawl isengaged with the ratchet teeth. In the o erative osition-of the pawl theratchet teet trip id y past the same during the forward movement of thetraction wheel but when the ower is lost or thrown off from the automoile while running up hill the traction wheel will only back up enoughuntil the abrupt rear end or shoulder of the ratchet tooth immediatelyin front of the pawl engages the nose of the latter when the furtherbackward movement of the traction wheel is positively arrested. By

strong support is provided for the same which is not liable to breakbutwill securely hold the same when called into play, thereby insuringthe automobile and its load a ainst accidents which otherwise would belia le to occur if the detent pawl were insecurelysupported and gave wayunder the strain to which it is subjected in'holding the automobileagainst backing down hill.

The brake mechanism whereby the movement of the automobile is controlledis constructed as follows: U, U represent two crescenty shaped orsemi-circular brake arms or levers which are arranged within the drum Ion opposite sides thereof and each of which is provided on its outerside with a brake shoe. u adapted to engage with the bore of the drumfor arresting or retarding the rotation thereof together with the partsconnected therewith. The rear pair of ends of both of these brake armsare pivotally connected with each other and with an arm V projectingrearwardly fronathe lower section of the coupling sleeve by means of atransverse pin orbolt o. The rear arm V practically forms an extensionof the stay on the rear side of the axle. The brake arms are normallydrawn toward each other and away from the bore of the brake drum bymeans of'a spring lw connecting these arms so that they do not interferewith the rotation of the drum and the parts connected therewith when nobraking effect is desired. The spreading or outward movement of thesearms for en aging their shoes with the inner side of the rake drum whenthe rotation of the drum and the parts connectedtherewith should beretarded or arrested is e'ected by means of a rotary spreading cam :c ofoblong form in cross section and arranged between the free front ends ofthe brake arms. The cam is arranged on the outer end ofl a horizontalspindle or shaft-X which is journaled in a bearing on the front arm -Iof the upper coupling sleeve in front of the axle. The rotation of thisspindle and the cam connected therewith may be effected by any suitablemeans but preferably by means of an upwardly projecting rock arm zconnected with the inner end thereof and an' o erating rod z connectedwith the upper en of the rock arm and operatively connected with amanipulating handle or lever arran ed within convenient reach of thedriver. pon turning the cam so that its low parts or faces are presentedto the brake arms, as shown in igs. l and 3, the brake arms are free tobe drawn by the spring w into their inoperative position. But uponturning said cam so that its high faces engage with the ends of thebrake arms the latter are moved outwardly and engage their'shoes withthe bore of the brake drum, wherebythe rotation of the same and thetraction wheel is retarded or arrested.

By mounting the pivot of the brake arms and the operating cam thereforon arms or. parts which project in diametrically opposite directionsfrom the coupling sleeve sections on the axle a very strong support isfurnished for these parts and renders the braking operation absolutelyreliable. By mounting the detent awl, the brake cam and the brake armsal on the stay or distance rod a very strong and compact construction isproduced which contains a minimum number of parts and can bemanufactured at comparatively low cost.

lBy detachably connecting the brake drum with the sprocket rim and thecoupling'ring of the traction wheel, the rim and drum or either of thesecan be renewed when worn out, thereby avoiding the necessity of renewingmore parts than are necessary land reducing the cost of making repairsaccordtraction wheel mounted on the axle, a driving shaft, a sprocketpinion mounted on the driving shaft,l a coupling ring having a channelshaped central part and external and .internal iianges which are securedlto said traction wheel, a drum having lan internal flange which isdetachably secured to the central art of said coupling ring and anexternal ange, a sprocket rim detachably secured to the external flangeof the drum, and a chain belt passing around said pinion and rim,substantially as set forth.

2. In an automobile, the combination of a frame, an axle yieldinglyconnected with said frame and having a cylindrical part,` a

traction Wheel j ournaled on said axle, a stay pivotally connected atone end With the rame, a divided cylindrical coupling sleeve l journaled on said cylindrical part of the axle n' and frame, a drumlmounted on said traction secure l ed on the frame, a sprocket pinionmounted'. 20 assmg around said Wheel and provided externally with an. an

nulai` row-'of `ratchet teeth and an annular flange, a detent plawlmounted on said stay andentgagingwit said teeth, a s rocket-rim to'saidflange, a driving s aft mounton said shaft, and a chain belt pinion andrim, substantiallyas vset forth. l

' v 4, In an automobile, the combination ofav frame, an axle, a springconnecting the axle .and frame, a traction Wheel mounted on the axle, astay movably connecting the axle and frame, a brake drum mounted on thetraction wheel, a

A v vided With shoes a apted to cooperate with the interiorof the drumandl pivoted at one of Itheilends on said stay, and means for the axle;a rockin shaft journaled on said spread' g said arms into theirloperative position, substantially as set forth. l.

5.- In an automobile, the combination of a frame, an axle, a springconnecting the axle and frame, va traction Wheel mounted on the axle, astay movably connecting the axle and lframe, a brake drum mounted on thetraction Wheel, a pair of brake arms rovided with shoes ada ted tocoperate Wit the in terior of the rum and ivoted at one of their ends onsaid stay, an means for spreading said arms into their operativeosition, consisting of a rotary cam pivote on thev stay and interposedbetween the opposite free ends of said arms, substantially as set forth.

. 6. In an automobile, t he combination of a.

frame, an axle, a spring connecting the axle and frame, a tractionwh-eelmounted on the axle, a stay movably connecting the axle and frame, abrake drum mounted on the traction Wheel, a pair of brake arms providedwith brake shoes adapted to -ccperate With the interior of said drum andpivoted at one of their ends on said stay on one side of stay on theother side of the axle, and a cam mounted on one end of -said shaft andar.- ranged between the free ends of said brak arms, substantially asset forth.

7. In an automobile, the combination of a frame, an axle, a springconnecting 'the axle and frame, a traction Wheel mounted on the axle, astay pivotally connected at one end with the frame and having a divided'coupling sleeve at its opposite end Which' embraces the: axle, a brakedrum lmounted on lthe traction Wheel, a pair of brake arms ar- ,andframe, a traction Wheel'mounted on the axle, a stay pivotally connectedat one end with the frame and having a divided-coupling sleeve Aat itsVopposite end which embraces the axle, a brake drum mounted on thetraction Wheel, a pair of brake arms arranged witbin thebrake drum andpivoted vat one pair of their ends on the stay on one side ofthe axle, arotary cam mounted on the stay on the other side of the axle andinterposed between the opposite pair of ends of the brake arms, anannular roW of ratchet teeth arranged on he drum, a detent awl mountedon the stay on the same side o the axleon which said' cam is arrangedand engaging with said ratchet teeth, 4a sprocket rim mounted onvthedrum, a driving shaft journaled` on the frame, a sprocket Wheel mountedon the driving shaft," and a chain belt passing around said pinion andrim, substantiallyias set forth. f

9. In an automobile, the combination of a frame, 'an axle, a `springconnecting the axle and frame, a traction Wheel mounted on the axle, astay pivotally connected at one end with the frame and having adividedlcoupling sleeve at its opposite end which eml mounted on the stay onthe same side o the axle on which said cam isarranged and engaging Withsaid ratchet teeth, a driven rim mounted concentrically on said drum, adriving shaft, and means for transmitting motion from said shaft to saidrim, substantially as set forth.

Witness my hand this 7th day of March,

' ALBERT B. SHULTVZ. Witnesses:

Trino. L. PoPP,` E. M. GRAHAM.

